12165018 has 8 divisors (see below), whose sum is σ = 24330048. Its totient is φ = 4055004.

The previous prime is 12165017. The next prime is 12165029. The reversal of 12165018 is 81056121.

It is a sphenic number, since it is the product of 3 distinct primes.

12165018 is an admirable number.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12165011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1013746 + ... + 1013757.

It is an arithmetic number, because the mean of its divisors is an integer number (3041256).

Almost surely, 2^12165018 is an apocalyptic number.

12165018 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12165018 is a wasteful number, since it uses less digits than its factorization.

12165018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2027508.

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 12165018 is about 3487.8385857147. The cubic root of 12165018 is about 229.9875103489.

The spelling of 12165018 in words is "twelve million, one hundred sixty-five thousand, eighteen".